Insert assembling tool



1945- E. ECKENER 2,390,524

INSERT AS SEMBLING' TOOL Filed May 50, 1944 2 Shets-Sheet 1 I N VEN TOR.

BY ERW/N- ECKENER a K W ATT Rur-y Patented Dec. 11, 1945 STATES PATENTOFFICE INSEREE. $90111 EiawihEckenen Bronx, N. Y., assignor toAircra'ftScrew Products Company; Ihcg, Longd'sl'and City; N. Y., acorpomtion ofNew-York' ApplicatiomMayBi);1944,;Serial'Noi 537,984,

Forithisi'punpose: the: portiom 5; has am inner d1? ameten according:tozthe: outer." diameter: of; the

coil; prion to! its .conti'aotiom and thexthrewdingc 4'1 isofgaadiametentandmpitch; and; pzzefenaiolwalsowoft April; 13; 1943; t=Evans;. A tool: of said typez aishape acoordingztmthataof saidtanpedmme;Ina

comprisesaa tubulanmember and:ax-rodelike meme bezgwinsacoa xialr.anrangement thcreto andam'ovable therein. tong-ripped.wire-coili placedinto=saidftubu- 1313- l lmemben' andi to mass itrthrough: am inteinaellythreaded endl portionof "the latter: and on into: the threaded hole forwhich it is: destined The cormentionel tool-E hasbeen: found". usefulifoperat'ed by he-nd but i not 1 fully .SEZfi'SfSJCtOIywhen: used in'wpower -drivem machine;- The invention aims; therefore;to render a-toolof thementionew l5 shamed".v Inanmsttzinstances,.therwinesformwilhbe:

The invention consistsinthe provision -of oertaimg-uiding'means forthemovementof the rod like membelin relation to the said tubular mem--ber; and aiso -of guiding meansfor-said tubular memberdn relation*to-aastationamyparti Further objects and detailsofitlie inventionwil1-be apparent from the descriptiomgiven Hom inafter and* theaccompanying" drawings' illus trating an embodiment thereof by: wayof exa-mpl'er In the drawings-:' i Fig: l is e-sid'e elevation ofwtoolaccordihg'to the invention and adapted to be attached:- t'o a--power-driven machine i Fig: -3 isa: diagrammatical side elevation ofpower driven-machine to" which thetOol -of-- Figs; 1' and-2 is applied;and

4 is a; f ont view-of the portion, of them chi e of Fig: 3:

Refningenow to-the drawings; thetoo1 il1ustrated imFigs: 1"- and"-2comprises, at substantially tubular-member I and a" r od member 2* ina;co-

lfincludes an end.) portion" 3 provided withan internal-"threading-fl'fAdjacent pprtion 3 there isazpoi tiorr5 which'is'laterally recessed atIi, and" has; an. approximately semi cylindrica'l side: wall 11 Thisportion 5 constitutes a; charging chem-' ber midis-intended toreceivejthereina wire coil Dreparatoryto being passedwhrough the threadingfikwhere the coil will "be' contracted to the -di-' emeter and pitchofithe tapped hole of a boss-or nut member'into which-thecoil is to' beinsertedi 65 drive. i The mentionedadi i ultiesaand:drawbacks the;drawing; a: wireae' coil "35.: is shown: positioned. inzxth'schargingtchamber: 5; Similarly; 331101? tion: of aaiboss" member:Z'Agwitb; atop: surface emit a thneazdedahole. 2E1 be lined; withxthezcoil;

10. 3misiindioatecfi'underneath-the tool. 'Iherillus trated: coil: wire.is: ,ofidiasmond'l-shaped'.cross-Stacy tiom but ,asifamasq thE'lItQQlaccording itothe in ventiom is; concerned; it mambeflofi any; othen: do;sired crossz-sectioni as, .e;.. ,g. circular:- on:

chosen;according?tbvthesforxmofqtheathreadgrooye offtheataappedi-lio'lez land; alscrsthes, threading; '4: Willi be:correspondingly? shaped: Howevemthis: isinoh absolutely; required. It;onlynecessam than the: tapped; hole';.,whereas; the diameter of the;threadingmlk, shouldtbeasuch ithatqthe; portions of.-thecoilr'havingupassed the tend; portion 3 of the: tubularrmembeecareasufliciently contracted; to:-

25;sonevemeadilwintoetheztapped hole; Themod liket:

member: 2 is; rotatable; and- ..ax-ia11y shifteble; in: member: I .so:that-pitsrend can .be: netractedato; clear: the; charging chamberl-f or"projected: from the pontionmofa-zmemberl.1atdeasbandistancerace' 3o;cording tb the depthioflothe tapped holedn whichthefwiiezcoiltiszztoabe" insertemi Thez:end::,8 off thes rod hissow-shaped: tha'tzitzmay-be rpushed imam axial directiozrzthrouglixacoil: positioned: im

chambeniiso; as engagethatqcoilzend whiohwisa Fig *2 -is across-sectionalong-line Z -2 of "closest ftoxtheathreading:4'2 Thatomeans if-.th e

coil is providedaagtrits endz with atdiametricalxtangz such-as 1 3'1imFiga 2, :thesrods mayfiber-slottedat Bil to receive" such tang; thatslot. If; the: coil; should-z: have" a: differently; shaped end the rod:

should: be formed accordinglylto; grip, the? endfrom: the; interior: ofthe :acoib. sofifait; as hereine before d'escribed;the"-toolzis-zsimilarztoithatoflthe;

aforemention'ediI'PatentziNo;. 253-1 61231. Howeven; I havefound thatthEFzCOKYBIltiOHfii toolirequir'es: axialarrangementthereto:Thetubularmemberfi: in its applicationea.certaiheskillontqtherpant of:the usen-wlio mustfeelswhen the; rod should shifted in anaxialhdirection; whencit shouldw be: turned; whom andflatfl whainlratee.it; shouldibe; turned while: it: is: advanced. At then-same: time; the*user: has to watch the; rod: engaging the-\coili and the coil enteringtheutapped holeiandvscrew ing into it; On account ofz thiszfacigytheztoolmi the-said patient does not accomplish atverx-Satia'factorwjoblwhen thearodeisqeonnectedqto. a p wer;-

jected. Means are provided in the illustrated" embodiment to insure suchaxial alignment of a coil in portion of 'member- I, andfor this purposethe shoulder face III between theportioris 5 and 3 is helically curvedaccording to the helix of the coil end bearing on said face prior to thecontraction of the coil. found it imperative that the movement of therod after-'ithas gripped the coil end is exactly in accordance with theprogression of the coil in the threading 4 when the rod is turned.Another feature of the present invention is therefore the provision ofan interiorly threaded portion II of the tubular'member I which may beengaged by an external threading l2-of a portion of the memher 2; Thediameter of the threadings II and I2 may be different from that ofthreading 4 but the pitches of the threadings II, l2 and 4 should beequal. The location and length of the threadings II and I2 on therespective members are so selected that the threadings are disengagedwhen the rod member 2 is retracted, that they become engaged when member2 is projected with its end 8 approximately to the level of the shoulderIll, and that they remain engaged. when the rod is projected beyond thatshoulder. This is done in order to permit, on the one hand, rapid projection and retraction of the rod end 8 through the charging chamber 5, andto enforce, on the; other hand, axial movement of the rod at the samerate as of the coil through the threading 4 and into the tapped hole.Intermediate the-portion5. and

the' threading III of the 'member I,'a cylindrical portion I3 isprovided with an inner diameter according to the :outer diameter of therod,2 in order to ins'ure'coaxial movementof the latter when thethreadings'are outof engagement. I

If a tool of .the'type described is'to. be attached to a'machine'forpower drive; it is ad-. visable .to'allow for a limited"movement also of the tubular member I, which however must" beFurthermore, I- havethe threaded portion 3 and a compression spring 22is positioned between the collar and said stationary member. The upperend 23 of rod 2 is so shaped that it may be inserted in a conventionalchuck such as used for instance in connection With drilling machines.

Now it will be clear that the tool hereinbefore described may be readilyattached to an existing machine including 'a shaft axially movable androtatable in both directions, the rod 2 with its. end 23 to be coupledwith such shaft and the stationary part I1 shown in the drawing being,

set screws l8with stop nuts I9 may be provided inthe stationarymember toengage with projections -the.grooves III and I5 respectively. In orderto insure that the recess 6 of the portion 5 is permanently clear forvthe receptionof a coil the grooves. and I5 may end at a: level so 10-cated'as to prevent. movement of, the recessed portion 5'beyondtheadjacent edged the stationary member II. It is, furthermoraadvisable toprovide for resilient means tending to return the: tubular member I. toits original position illustrated in :Figs. 1 and 2 if it is shiftedtherefrom by a force acting'in a downward direction. For this purpose. aflange orcollar 2I is secured to the end of the member I oppositecleared the charging chamber 5.

in that event, either an integral part of the machine frame oranattachment thereto.

gagement with the tang 3| of the coil end hear ing on shoulder I0.Further shifting of the rod 2 in the same direction hasifor a resultthat the tubular member I is also taken along until the end face of theportion 3. isstopped by the top face 25 of the boss member 24 providedwith the tapped hole 26 into which the coil-is to be inserted; Acircular recess2lof the surface 25, co-

axial with the tappedv hole, will facilitate the alignment of the axesof the tool and said hole. If now, the rod 2 ,is rotated in thedirection of the winding of the coil and of the threadings 4, II and I2,the two last mentioned threadings will engage each other and therebyadvance the rod atthesame rate as the coil advances in the threading 4.This rotation and advancement of rod 2 will be continued until theentire coil is inserted the required depth in the boss member. When thisposition of the coil is reached, the direction ;of the rod movement willbe reversed as to both its axial and peripheral components. Inconsequence, the' coil will be released and owing to its resiliency willexpand so as to Wedge into the thread groove of the tapped hole.Simultaneously, therod 2 and the member I will return to their originalposition under the action of spring 22 and the thread connection II, I2.

Ithasbeen stated thatthe tool just described isintended to be attachedtoor incorporated in.

a machine provided with an axiall movable shaft and a reversible driveto rotate such shaft. The combination of such a machine is shown in Fig.3 which col'nprises a stationary column erected on a pedest-al SI andsupporting at its top end a transverse beam 52 rigidly secured thereto.-

The rearward end of the beam carriesan electric motor 53, and theforward end carries a housing 54 of a vertical bearing 55 and of apulley 55 driven by the motor 53 via another pulley..51 and gear fil'whichmay be of any suitable and con ventional design. This gear isconnected toshaft 59 so that the latter con'stiti'ites the input ordriving shaft for said gear. The output shaft is provided with acoupling device 66 to which the rod member 2 of thetool of Figs. 1 and 2is.

' heehu men 5 "we. when u na wering; t; l eve Fi he lit mes e he bu ment Swit i .-..Q t ete 5 w qm t ll n. im d. relationship to the,operationof, the machine.

u w th s. dwt ieme i allm eshed byv i etedolifthfiamm t 3- e.

1 wp uct r, s; directl penect d. i Th9 3 x 5 QQtOtz erenteeeed PDQ itQthe everw m t we lett r-and to eparatet e. .cpntatts "when th sl e 9 cose ire}! whe t e sleeve shprt. distance.-

eaeh, the h n the ee eturnstq. ts, p-

me .129. weree ik ns tina ne t ran illta t ee eg in hen e eev i qw r byactuation or the foot, lever. 'Ijf t ig s not. ie n tl maybe mused o wat. the s ee've 62 can t reach that'l'evelatwhichlit. wouldjifllltllfi 311. 53 wilia' un continuously when once connected to the power source.In this connection, it should also. be nnovided. in. or er; si art Qtthe ve e w n j i s el: he 9 1?mm:a curr nt he ee n where),

ta e 9. errata n e te .-es art o i. A esser: arm; on le er 2. n ame-pah.- f he leeve. .2.1 5% as o.

its.ite l li s ilinpsi It i l he l firqthat; arrangement-the meter. willet-stop d;

arm 81." In thatevent motor heart down.

tabiet shu nt Yjfi-l he. pindle. k1 leter it; c-.. dna. Q-tendli nthedescribed tern of: pan sitheniea chine. requires, p iest-outs:oneretioni. mereht the.

el Wins adiustmentssqfirst, settin ansifixina the arm; l;1. sthatgthereisjashort.spacetbetween the ottom recent: member I. and; the.tensile-t. face of the boss 24 mm which; a coilislto belinr. set d;second; setting; nut leaccordina to the 3 depth. toswhich; thevcoil is.tn. be; inserted; and

third; adjusting? nut-.19.: according lto the hei t to) which the. rod Z;-.iS.: tobeligted; which; is; at least the. height. at; which the; rodhas; cleared: the charging. chamber -5. of: member 1.

boss. 24. will, be. sopositionedzthat. the axis of the tapped,holethereinis: in line-with the tool axis. A.Q0iI-'m.ay-, then,becharged into the chamber. 5; ofsthe. memb Q11 I: and:;f0ot lever.1.0;- may. be pressed;- Thereby, the motor will; be; started: and the,rod lowered: into} thecoil so as to gript the. .11. end. Whenthewrodisilowered so. far the thre din s H: and t2: ill" engage: eachother; Ll rereloy a pressure will; be exerted, on the. mem-w r; I. so;that. it wilkhe shifted: downwardu einst:

e. r stra nt; of; spr n 2 t bear. on. the. surface. QtbQss; .4;. Ef emthis Ppsitionv on, the. ma can. roceed; in ext. d eetien onlaecordingrtothe, ite .Qtth ceilin s. Cont nuin his. more, 11 s lwzthe.ee lthrqughthe e1 ulmlanmemberrand. mm he tam dha s oi. bees;When. coil: si ser ed r h de r deat nut; it as endin r e.- p eced n a.t; W'l-l.

q omn etsd r re setqi t e; o filki i qt her dn. on equence theth eadzlings II and 2; ill: ft mend: te a ive yc .01 e e l unt theme s learedhe; har 1 em nn :m t rwhe h rern1tthe era or o h maqhin zs i la.exer stm p e re-en the foot lever 10,; soon.- as; this; lever isre.-. leased,the counterpgise; IWilljiftth connected parts, n i a the adj sted.- l ra or a th ten e Lt ena ts-are arr s e andzth dire t on rotationreversed, Whether cry-net themotor mu t n u y; step d. w 1 -..d nend-onwhet er: e et the a u tme esma e r he ten eveiatiwhich thesleeve-Bg isoperative to switch Qfij themotQlii.

It .is, o f course, possible-toruse in ama h y e e e ibeda. eversibe-moto r in w t ontroll d bran asiil stah ahutv. ment device such asconstituted by;the-.p13 rtsji1- to 8 1 1 and which is responsive: to theaxial movethe..embodiment, .ot Fig 3: has been selected; for;

' illustration otthe invention iniorder toshow how the toolcan bereadily applied to existing ri lin h ne wit ni ireetie allyrota ing.motor, A, drilling machine. may; corn rise; the column orfstandard 50with, pedestal 5!, table, 68; cross m. w t assoc ated ar s; hai sleeve52 including arm fil forgmoy n ithe Shaft up and downward; and. the footleverl li and i connecting): rod; 12 :1 arrangement: including thecounterpoi'se lfiifor; shifting. thetsleeve 62.2 A-tap ping head of asuitable type available on the market as an attachment to a, drillingmachine may, then, be connected to the arm 5| as the reversing geardenoted 64 in Fig. 3. Such tapping head will provide all parts requiredin addition to the drilling machine and including the adjustablecontrols for reversing the direction of rotation of the output shaft 65to which a chuck When. or before these adjustments are completed, the

have. leashed;

66 may be secured. The tool of Figs. 1 and 2 may then be attached to thedrilling machine with tappinghead in the manner described so as tocomplete the'm-achine according to the invention. It will be clearthatin order to make the machine applicable for coils of different diametersan exchange of only the tubular member I and the rod-member 2 isrequired.

It will be apparent to those skilled in the art that many alterationsand modifications of the mechanism illustrated and described arepossible Without departing from the spirit and essence of my inventionwhich for this reason shall be limited only by the scope of the appendedclaims.

,l claimi' 1. A tool of the character described, comprising a tubularmember including an internally threaded end portion and an adjacentlaterally recessed portion forming a charging chamber to receiveth'ereina wire coil intended to be con tracted by passing itthrough said endportion, said member further including a second internallp threadedportion intermediate its other end and said recessed portion, and a.rotatable and axially movable rod-like member in coaxial arrangementwith said tubular member, said rodlik'e member including one endprojectable through said recessed portion and said first mentioned endportion of said tubular member and adapted to grip the end of a coilfrom the interior thereof, another end portion adapted for connection'with a reversible drive, and an intermediate portionexternally threadedfor engagement of said second internal threading, all said threadingsbeing of a pitch according to the tapped threading of the hole of theboss or nut member into which said coil is to be inserted.

2. A tool as claimed in claim 1, said second internal threading of saidtubular member and said external threading of said rod-like member beingof such lengths and so located that they engage each other when saidgripping end of said rodlike member is in a position close to that endof the charging chamber which is adjacent said first internal threading,and that they stay engaged when the rod-like member is projected fromsaid position in the direction of said first internal threading, butthat they are disengaged when said rod-like member is retracted fromsaid position, and said tubular member further including an internallycylindrical portion to guide said rod member coaxially when saidthreadings are out of engagement. g

3. A tool as claimed in claim 1, said threading of said internallythreaded end portion of said tubular member having an outer diameter according to that of the threading of a tapped hole into which said coilis intended to be inserted, said recessed portion having a diameteraccording to that of said coil prior to its contraction, and theshoulder face between the Side wall of said charging chamber and thethreading of said end portion being helically'inclined according to thehelix of said coil prior to its contraction.

.4. A tool of the character described, comprising a tubular memberincluding an internally threaded end portion and an adjacent laterallyrecessed portion forming a charging chamber to receive therein a wirecoil intended to be contracted by passing it through said end portion,

said member further including a second internally threaded portionintermediate its other end and said recessed portion, said tubularmember embodying means for engagement with an external stationary memberto guide said tubular member non-rotatable in an axial direction, andarotatable and axially movable rod-like member in coaxial arrangementwith said tubular member, said rod-like member including one endprojectable through said recessed portion and said first mentioned endportion of said tubular memher and adapted to grip the end of a coilfrom. the interior thereof, another end portion adapted for connectionwith a reversible drive, and anintermediate portion externally threadedfor engagement of said second internal threading, all said threadingsbeing of a pitch according to the tapped threading of the hole of theboss or nut member into which the said coil is to be inserted;

5. A tool'of the character described, comprising a tubular memberincluding an internally like member including one end projectable'through said recessed portion and said first mentioned end portion ofsaid tubular member and adapted to grip the end of a coil from theinterior thereof, another end portion adapted for connectionwith areversible drive, and an intermediate portion externally threaded forengagement of said second internal threading, all said threadings beingof a pitch according to the tapped threading of the hole of the boss ornut member into which said coil is to be inserted, and resilient meansin connection with said tubular member and adapted to bear on astationary member so as to return said tubular member to an originalposition if shifted from such position.

6. A tool as claimed in claim 5 further comprising means 'in connectionwith said rod to shift said rod in the direction of its axis selectiveinto or out of engagement of its threadin with the mating threading ofsaid tubular member.

7. A tool as claimed in claim 5, said tubular member further includinglengthwise extending guide faces for the engagement by a stationary partto prevent said tubular member from moving in other than axialdirection.

8. A tool as claimed in claim 5, further com-f prising means inconnection with said other end portion of the rod-like member so as tofollow axial movement of said rod for actuation of a control of aiddrive according to two selected end positions of said rod-like member.

' ERWIN ECKENER.

